private bool isMixedContent(DTDItem dtdItem)
{
if (dtdItem is DTDAny)
{
return(false);
}
else if (dtdItem is DTDEmpty)
{
return(false);
}
else if (dtdItem is DTDName)
{
return(false);
}
else if (dtdItem is DTDChoice)
{
List <DTDItem> items = ((DTDChoice)dtdItem).Items;
foreach (DTDItem item in items)
{
bool b = isMixedContent(item);
if (b)
{
return(true);
}
}
}
else if (dtdItem is DTDSequence)
{
List <DTDItem> items = ((DTDSequence)dtdItem).Items;
foreach (DTDItem item in items)
{
bool b = isMixedContent(item);
if (b)
{
return(true);
}
}
}
else if (dtdItem is DTDMixed)
{
List <DTDItem> items = ((DTDMixed)dtdItem).Items;
foreach (DTDItem item in items)
{
bool b = isMixedContent(item);
if (b)
{
return(true);
}
}
}
else if (dtdItem is DTDPCData)
{
return(true);
}
else
{
#if DEBUG
Debugger.Break();
#endif // DEBUG
}
return(false);
}
private static void GenerateRegexForAllowedChildren(StringBuilder stringBuilder, DTDItem dtdItem)
{
if (dtdItem is DTDAny)
{
stringBuilder.Append("");// "Any";
}
else if (dtdItem is DTDEmpty)
{
stringBuilder.Append("");
}
else if (dtdItem is DTDName)
{
stringBuilder.Append("(?:");
string name = ((DTDName)dtdItem).Value;
name = name.Replace(':', NAMESPACE_PREFIX_SEPARATOR);
stringBuilder.Append(Regex.Escape(name));
stringBuilder.Append(DELIMITER);
stringBuilder.Append(")");
}
else if (dtdItem is DTDChoice)
{
List <DTDItem> items = ((DTDChoice)dtdItem).Items;
if (items.Count > 1)
{
stringBuilder.Append("(?:");
}
bool isFirst = true;
foreach (DTDItem item in items)
{
if (!isFirst)
{
stringBuilder.Append("|");
}
isFirst = false;
GenerateRegexForAllowedChildren(stringBuilder, item);
}
if (items.Count > 1)
{
stringBuilder.Append(")");
}
}
else if (dtdItem is DTDSequence)
{
List <DTDItem> items = ((DTDSequence)dtdItem).Items;
if (items.Count > 1)
{
stringBuilder.Append("(?:");
}
bool isFirst = true;
foreach (DTDItem item in items)
{
if (!isFirst)
{
stringBuilder.Append("");
}
GenerateRegexForAllowedChildren(stringBuilder, item);
isFirst = false;
}
if (items.Count > 1)
{
stringBuilder.Append(")");
}
}
else if (dtdItem is DTDMixed)
{
List <DTDItem> items = ((DTDMixed)dtdItem).Items;
if (items.Count > 1)
{
stringBuilder.Append("(?:");
}
bool isFirst = true;
foreach (DTDItem item in items)
{
if (!isFirst)
{
stringBuilder.Append("|");
}
GenerateRegexForAllowedChildren(stringBuilder, item);
isFirst = false;
}
if (items.Count > 1)
{
stringBuilder.Append(")");
}
}
else if (dtdItem is DTDPCData)
{
stringBuilder.Append(Regex.Escape(PCDATA));
}
else
{
//DebugFix.Assert(false);
#if DEBUG
Debugger.Break();
#endif // DEBUG
stringBuilder.Append(Regex.Escape(UNKNOWN));
}
if (dtdItem.Cardinal == DTDCardinal.ZEROONE)
{
stringBuilder.Append("?");
}
else if (dtdItem.Cardinal == DTDCardinal.ZEROMANY)
{
stringBuilder.Append("*");
}
else if (dtdItem.Cardinal == DTDCardinal.ONEMANY)
{
stringBuilder.Append("+");
}
}
private void initMixedContentXmlElementNamesFromDTD(string dtdUniqueResourceId, Stream dtdStream)
{
List <string> list;
m_listOfMixedContentXmlElementNames.TryGetValue(dtdUniqueResourceId, out list);
DebugFix.Assert(list != null);
if (list == null)
{
return;
}
DTD dtd = null;
try
{
// NOTE: the Stream is automatically closed by the parser, see Scanner.ReadNextChar()
DTDParser parser = new DTDParser(new StreamReader(dtdStream, Encoding.UTF8));
dtd = parser.Parse(true);
}
catch (Exception ex)
{
#if DEBUG
Debugger.Break();
#endif
dtdStream.Close();
}
if (dtd != null)
{
foreach (DictionaryEntry entry in dtd.Elements)
{
DTDElement dtdElement = (DTDElement)entry.Value;
DTDItem item = dtdElement.Content;
if (isMixedContent(item))
{
if (!list.Contains(dtdElement.Name))
{
list.Add(dtdElement.Name);
}
}
}
foreach (DictionaryEntry entry in dtd.Entities)
{
DTDEntity dtdEntity = (DTDEntity)entry.Value;
if (dtdEntity.ExternalId == null)
{
continue;
}
string system = dtdEntity.ExternalId.System;
if (dtdEntity.ExternalId is DTDPublic)
{
string pub = ((DTDPublic)dtdEntity.ExternalId).Pub;
if (!string.IsNullOrEmpty(pub))
{
system = pub; //.Replace(" ", "%20");
}
}
string normalisedUri = system.Replace("%20", " ").Replace(" //", "//").Replace("// ", "//");
foreach (String key in DTDs.DTDs.ENTITIES_MAPPING.Keys)
{
if (normalisedUri.Contains(key))
{
string subResource = DTDs.DTDs.ENTITIES_MAPPING[key];
Stream stream = DTDs.DTDs.Fetch(subResource);
if (stream != null)
{
initMixedContentXmlElementNamesFromDTD(dtdUniqueResourceId, stream);
}
else
{
#if DEBUG
Debugger.Break();
#endif
}
break;
}
}
}
}
}
private static string GenerateRegexForAllowedChildren(DTDItem dtdItem)
{
string regexStr = "";
if (dtdItem is DTDAny)
{
regexStr += "";// "Any";
}
else if (dtdItem is DTDEmpty)
{
regexStr += "";
}
else if (dtdItem is DTDName)
{
regexStr += "(?:" + ((DTDName)dtdItem).Value + "#)";
//regexStr += "(" + ((DTDName)dtdItem).Value + "#)";
}
else if (dtdItem is DTDChoice)
{
List <DTDItem> items = ((DTDChoice)dtdItem).Items;
//if (items.Count > 1) regexStr += "(?:";
if (items.Count > 1)
{
regexStr += "(";
}
bool isFirst = true;
foreach (DTDItem item in items)
{
if (!isFirst)
{
regexStr += "|";
}
isFirst = false;
regexStr += GenerateRegexForAllowedChildren(item);
}
if (items.Count > 1)
{
regexStr += ")";
}
}
else if (dtdItem is DTDSequence)
{
List <DTDItem> items = ((DTDSequence)dtdItem).Items;
if (items.Count > 1)
{
regexStr += "(?:";
}
//if (items.Count > 1) regexStr += "(";
bool isFirst = true;
foreach (DTDItem item in items)
{
if (!isFirst)
{
regexStr += "";
}
regexStr += GenerateRegexForAllowedChildren(item);
isFirst = false;
}
if (items.Count > 1)
{
regexStr += ")";
}
}
else if (dtdItem is DTDMixed)
{
List <DTDItem> items = ((DTDMixed)dtdItem).Items;
if (items.Count > 1)
{
regexStr += "(?:";
}
//if (items.Count > 1) regexStr += "(";
bool isFirst = true;
foreach (DTDItem item in items)
{
if (!isFirst)
{
regexStr += "|";
}
regexStr += GenerateRegexForAllowedChildren(item);
isFirst = false;
}
if (items.Count > 1)
{
regexStr += ")";
}
}
else if (dtdItem is DTDPCData)
{
regexStr += "#PCDATA";
}
else
{
regexStr += "**UNKNOWN**";
}
if (dtdItem.Cardinal == DTDCardinal.ZEROONE)
{
regexStr += "?";
}
else if (dtdItem.Cardinal == DTDCardinal.ZEROMANY)
{
regexStr += "*";
}
else if (dtdItem.Cardinal == DTDCardinal.ONEMANY)
{
regexStr += "+";
}
return(regexStr);
}
